Researchers often choose a correlated-groups design over an independent-groups design when
A) their sample size is small.
B) they expect small differences owing to their IV.
C) they want to reduce error variance.
D) All of the above.

Question

Quizplus · Accepted Answer

A correlated-groups design is often chosen to control for individual differences, which can be particularly beneficial when the sample size is small (A), when expecting small differences due to the independent variable (B), and to reduce error variance (C).

Researchers Often Choose a Correlated-Groups Design Over an Independent-Groups Design